From: bcrocker on
gitlab.com
process_configs.sh: Fix syntax flagged by shellcheck\
• SC2006: Use $(...) notation instead of legacy backticked `...`.\
• SC2034: <variable> appears unused. Verify use (or export if used
externally).\
• SC2045: Iterating over ls output is fragile. Use globs.\
• SC2046: Quote this to prevent word splitting.\
• SC2086: Double quote to prevent globbing and word splitting.\
• SC2231: Quote expansions in this for-loop glob to prevent
wordsplitting, e.g. "$dir"/*.txt .\
Ignore:\
• SC2164: Use 'cd ... || exit' or 'cd ... || return' in case cd fails.\